I cannot make the comparison yet but my guess is that it will be substantially lighter. Probably two or three times lighter perhaps even more. There is only one shorter surface, not two longer surfaces which are bonded together and encased in a folding plastic sheathe of sorts. You do the math.

I suppose it is just several more ounces of weight. But to quote a man whose opinion I value......"ounces count".

Not trying to be a horses behind, just trying to accurately evaluate gear and give an honest and helpful opinion.

If you tend to basecamp and are less concerned with ounces adding up then Kerry's sharpener is very slick indeed and likely more efficient than what KF uses. But the first thing I noticed was that it had some heft. So that added efficiency comes with a price, both in terms of cost and added weight.